Malicious PDF — malware analysis report

Static analysis result for SHA-256 602970e3e4437a13…

MALICIOUS

PDF

77.6 KB Created: 2021-07-05 06:27:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 30b6d50f923c1caaa3fef2ab9ec7726b SHA-1: 939535080c2fc03efe36c65a9b4db936f2997b7b SHA-256: 602970e3e4437a13c6c60ae31a29e0f49e617ffae6147c8a0183b99cf64a932c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it likely exploits a vulnerability or contains malicious content. The numerous embedded URLs point to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution campaign. The file's structure and numerous external links are consistent with a link farm designed to redirect users to malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7403

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://wastran.ru/uplcv?utm_term=average+cost+of+college PDF link annotation
    • http://emke.hu/uploads/ckfinder/userfiles/files/bedalanabovulaxiz.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/4799b33a029eb78c84e49b292b219d72/salevagubik.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1609a10325de42---83294729125.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160885152d4c68---55822499800.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b110b8f43e---zamuridapekigawugow.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/nufixagawibul.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942015157cc---basirugepugomax.pdfIn PDF document text
    • https://cissud.it/uploads/ck_editor/files/favitorebugafoxolabewenud.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/16jm1thitn75onbefk6o45dv1e/somogifipixinidokadune.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/9d40be2b970169bd41b2c5550b9c0b84/55877094097.pdfIn PDF document text
    • https://paulins.se/anvandarbilder/178/files/xafuketeve.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/dd17c5c0889c7124566443905c3633bf/fofifebebidilevase.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b8ce90a053d---wavuwapil.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/aceedaffa23cc91de7630ba4798e8ce4/sopumisu.pdfIn PDF document text
    • http://adainst.com/uploade/files/20210624045040.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021050120304573499.pdfIn PDF document text
    • http://ridendo.cz/files/file/pobiz.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/i6ikh486cirumit5141bvuvie6/lawagebufonipifeb.pdfIn PDF document text
    • http://hphs1958reunion.com/clients/47465/File/mikon.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/da95np5h03bndbnsp3260eh31p/17232631475.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca539f258d---93772275368.pdfIn PDF document text
    • http://toptoptraining.ru/img/upload/file/85406223492.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/e91a6ad614eb1d47f68c3bcb5d78bb7b/70249718442.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160afdfe9651e5---bexupidedolabofirefava.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11828 10364 bytes
SHA-256: 19c3af82c3867df10e9890c4170668d4bbef7f7266562f26ffbaf107458d39fd